Question: What thermal power station in Russia/the Soviet Union has the smallest capacity?
Paraphrase: Which thermal power station in Russia has the least capacity?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q200297 . ?ent wdt:P2109 ?obj . ?ent wdt:P31 wd:Q2628147. } ORDER BY ASC(?obj)LIMIT 5